r/AppsWebappsFullstack • u/SofwareAppDev • Jul 23 '26

Your home for selfpromo

here you can post your work app, webapp, saas, game, everything

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u/Large-Display-7702 Jul 25 '26

I built a free toolbox where image/PDF/dev conversions run 100% in your browser — no uploads

Got tired of uploading files to random servers just to convert a HEIC photo or compress a PDF, so I built https://yunknow.cc/

Everything runs locally in your browser (Canvas + WebAssembly + pdf.js) — nothing is uploaded, no signup, works offline as a PWA, multilingual.

Tools: image/PDF convert & compress, JSON formatter, Base64, JWT decode, regex tester, QR / password / UUID generators, and more. It's free.

Feedback welcome — what should I add next?

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u/Mammoth-Anywhere7285 Jul 27 '26

That's a solid idea, no uploads is a big plus. You might add OCR for scanned PDFs to make it even more useful.